Gas-burner.



A. GRANDJEAN.

GAS BURNER.

APPLIOATION mum DEC. 20, 1910,

Patented Mar. 5, 1912.

- Index afar flr'ifigu G m V J GAS-BURNER. V

mm:- STATES PATENT ors on.

ARTHUR GRANDJ'EAN, or SAN mnco, oAL IromIIA'.

Bunsen type and is especially designed for use for burning gas which contains a greater or less amount of oxygem'i hich may vary a. in proport on to the carbo of the gas, so

I that a greater or less adiitixture of atmospheric air {is desirable in-"orderto afford complete combustion.

The object of this invention is to provide a simple and convenient contrivance by which theamount of air and gas introduced into the ,Bunsen tube will be proportioned inversely the adjustment or regulation is efi'ectech I The. a'ccom anvin drawin s illustrate the r p r: z:

inventiori.

l iguro l is an elevation partly in section of a burnel illustrating this invention. -T he Bunsen tube is shown intact. Fig. 2 is an enlarged fi-{agmental vertical mid-section on line fv Figs' 3 and 4, of the burner shown in Fig. :1. Fig. 3 is'an enlarged plan section on line as, 'Fig. 1. F ig. l is an enlarged view oi -the underside of the burner. Fig. 5 is a bottomfview of the bonnet detached,

as shown in the scale of Fig. 1.

It is understoodfthat the usual .gas burner attachments for, a 'lVelsbach, or other type ot lamp, may be supplied to form a lamp burner. view to avoid confusion.,

' 1 is a hollow body forming the base of a Bunsen burner and provided internally with a gas chamber a and having a screw-threaded gas inlet 2' for connection with a gas pipe, not shown, and provided internally with a mixing chamber 1) formed at the bottom of the Bunsen tube 11, and with a partition having'fa central gas jet hole 3 and a port 4 which port may be formcdgof av .aiumbcr of holes. Said body is' provided externally with a flange Shaving one or more holes to form an auport 6. There may be anvdesirable number of holes to form the gas port 4 and the air port 6. In the drawing the device, is shown provided with three holes to form a gas port 4 and thelilie number of holes to form the air port 6.

The gas jet hole 3 is centrally arranged in The same are omitted from the I the partition 0 and the holes formin the gas port 4 are symmetrically disposed -t erearound and'the valve -7 havingvalved ports 8 to register with the holes forming the gas port fl.- is pivoted on a nipple 9 through which'the gas jet hole 3 extends. Said gas 5 valve 7 is a thin plate provided with astem 10 that projects beyond the base of the Bunsen tube 11 and through a way 12 in said base that allows the stem to oscillate sufliciently to entirely open and close'the gas port 4 and to do this gradually as the-plate is turned; the gas jet hole 3 remaining open at all times.

The bonnet 13 is seated on a flange and pivotally mounted on and is arranged to revolve around the mixing chamber formed at the base of the Bunsen tube'and is provided with a valved plate 14 having holes forming a port 15 adapted to communicate with the air port 6 in one position of the bonnet, the

air port being closed by said plate at an-. other position of the bonnet.

The bonnet is provided with a recess 16 which fits the stem 10 so that when the bonnet is revolved on the Bunsen tube the valve is correspondingly rotated.

The partition, bonnet, valve, flange and the ports therethrough are so arranged relatively that the gas port is opened as the air port is closed and vice versa, as the bonnet is revolved in' one or the other direction. The air which passes through the air port is directed by the bonnet into the mixing chamber at the base of the Bunsen tube to is produced.

I claim A gas burner comprisinga hollow body forming the base thereof and havinga 'gas chamber and a partition above 'said chamher, and provided externally withaflange, a tube forming a mixing chamber above the partition, there, being a gas inlctinto the gas chamber, a gas port through the parti-' tion and an airf-portlhrough the flange; a valve plate pjrotally mounted-on the partit ion inside the mixingchamber and pro- Patented Mar. 5, 1912.

vided with a port to register with the gas port and adapted to open and close said gas port as the plate is rotated; and a bonnet seated on the flange and pivotally mounted on the burner tube around the mixing chamber and communicating with said mixing chamber and provided with a plate. having a port to register with the air port in the flange and also being in connection with the 10 valve plate to rotate the same to close the gas port as the air port is opened and vie versa.

In testimony whereof, I have hereunt set my hand at Los Angeles, California, this 10th day of December, 1910.

ARTHUR GRANDJ In presence of J AMES R. TOWNSEND, L. BELLE RICE. 

